Affective freeze thaw prevention is the best way to reduce the impact of freeze thaw on concrete. There are various steps the concrete must undergo in order to maximize durability. This includes allowing a maximum water to cement ratio and leaving space for entrapped air. These steps are affective because they minimize the amount of concrete the water and ice come into contact with. It is the cement which does not allow water permeability, and therefore cracks, but these methods give water room to swell. Another important consideration is when to set the concrete. Fall and winter months are less desirable, and it needs at least 30 days to set before freeze thaw conditions take effect.
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